What's at stake in Iran's presidential election?

Iran’s presidential election Friday is effectively a choice between moderate incumbent Hassan Rouhani and hardline jurist Ebrahim Raisi, with major implications for everything from civil rights to relations with Washington. Rouhani is still seen as the frontrunner, but he faces a tougher than expected challenge from Raisi, who has rallied religious traditionalists and working-class voters disillusioned with the stagnant economy.